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Ramos PZ, Call CC, Simitz LV, Richards JJ. Evaluating the Rheo-electric Performance of Aqueous Suspensions of Oxidized Carbon Black. J Colloid Interface Sci 2023; 634:379-387. [PMID: 36542968 DOI: 10.1016/j.jcis.2022.12.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/30/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022]
Abstract
HYPOTHESIS The macroscopic properties of carbon black suspensions are primarily determined by the agglomerate microstructure built of primary aggregates. Conferring colloidal stability in aqueous carbon black suspensions should thus have a drastic impact on their viscosity and conductivity. EXPERIMENTS Carbon black was treated with strong acids following a wet oxidation procedure. An analysis of the resulting particle surface chemistry and electrophoretic mobility was performed in evaluating colloidal stability. Changes in suspension microstructure due to oxidation were observed using small-angle X-ray scattering. Utilizing rheo-electric measurements, the evolution of the viscosity and conductivity of the carbon black suspensions as a function of shear rate and carbon content was thoroughly studied. FINDINGS The carboxyl groups installed on the carbon black surface through oxidation increased the surface charge density and enhanced repulsive interactions. Electrostatic stability inhibited the formation of the large-scale agglomerates in favor of the stable primary aggregates in suspension. While shear thinning, suspension conductivities were found to be weakly dependent on the shear intensity regardless of the carbon content. Most importantly, aqueous carbon black suspensions formulated from electrostatically repulsive primary aggregates displayed a smaller rise in conductivity with carbon content compared to those formulated from attractive agglomerates.
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Affiliation(s)
- Paolo Zapanta Ramos
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL 60208, USA.
| | - Connor Clayton Call
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL 60208, USA.
| | - Lauren Virginia Simitz
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL 60208, USA.
| | - Jeffrey John Richards
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL 60208, USA.
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2
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Dronova M, Lécolier E, Barré L, Michot LJ. Phase diagram, structure and rheology of boehmite dispersions: role of electrostatic interactions. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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3
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Rheological properties of Ce0.5Zr0.5O2 hydrosols. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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4
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Simmons J, Nickels JD, Michalski M, Grossutti M, Shamana H, Stanley CB, Schwan AL, Katsaras J, Dutcher JR. Structure, Hydration, and Interactions of Native and Hydrophobically Modified Phytoglycogen Nanoparticles. Biomacromolecules 2020; 21:4053-4062. [DOI: 10.1021/acs.biomac.0c00870] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- John Simmons
- Department of Physics, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Jonathan D. Nickels
- Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, Ohio 45221, United States
| | - Michelle Michalski
- Department of Chemistry, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Michael Grossutti
- Department of Physics, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Hurmiz Shamana
- Department of Physics, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Christopher B. Stanley
- Shull Wollan Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Adrian L. Schwan
- Department of Chemistry, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - John Katsaras
- Shull Wollan Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - John R. Dutcher
- Department of Physics, University of Guelph, Guelph, ON N1G 2W1, Canada
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5
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Scotti A, Brugnoni M, G Lopez C, Bochenek S, Crassous JJ, Richtering W. Flow properties reveal the particle-to-polymer transition of ultra-low crosslinked microgels. SOFT MATTER 2020; 16:668-678. [PMID: 31815271 DOI: 10.1039/c9sm01451a] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Exploiting soft, adaptive microgels as building blocks for soft materials with controlled and predictable viscoelastic properties is of great interest for both industry and fundamental research. Here the flow properties of different poly(N-isopropylacrylamide) (pNIPAM) microgels are compared: regularly crosslinked versus ultra-low crosslinked (ULC) microgels. The latter are the softest microgels that can be produced via precipitation polymerization. The viscosity of ULC microgel suspensions at low concentrations can be described with models typically used for hard spheres and regularly crosslinked microgels. In contrast, at higher concentrations, ULC microgels show a much softer behavior compared to regularly crosslinked microgels. The increase of the storage modulus with concentration discloses that while for regularly crosslinked microgels the flow properties are mainly determined by the more crosslinked core, for ULC microgels the brush-like interaction is dominant at high packing fractions. Both the flow curves and the increase of the storage modulus with concentration indicates that ULC microgels can form glass and even reach an apparent jammed state despite their extreme softness. In contrast, the analysis of oscillatory frequency sweep measurements show that when approaching the glass transition the ultra-low crosslinked microgels behave as the regularly crosslinked microgels. This is consistent with a recent study showing that in this concentration range the equilibrium phase behavior of these ULC microgels is the one expected for regularly crosslinked microgels.
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Affiliation(s)
- Andrea Scotti
- Institute of Physical Chemistry, RWTH Aachen University, 52056 Aachen, Germany.
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6
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Hung JJ, Zeno WF, Chowdhury AA, Dear BJ, Ramachandran K, Nieto MP, Shay TY, Karouta CA, Hayden CC, Cheung JK, Truskett TM, Stachowiak JC, Johnston KP. Self-diffusion of a highly concentrated monoclonal antibody by fluorescence correlation spectroscopy: insight into protein-protein interactions and self-association. SOFT MATTER 2019; 15:6660-6676. [PMID: 31389467 DOI: 10.1039/c9sm01071h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The dynamic behavior of monoclonal antibodies (mAbs) at high concentration provides insight into protein microstructure and protein-protein interactions (PPI) that influence solution viscosity and protein stability. At high concentration, interpretation of the collective-diffusion coefficient Dc, as determined by dynamic light scattering (DLS), is highly challenging given the complex hydrodynamics and PPI at close spacings. In contrast, self-diffusion of a tracer particle by Brownian motion is simpler to understand. Herein, we develop fluorescence correlation spectroscopy (FCS) for the measurement of the long-time self-diffusion of mAb2 over a wide range of concentrations and viscosities in multiple co-solute formulations with varying PPI. The normalized self-diffusion coefficient D0/Ds (equal to the microscopic relative viscosity ηeff/η0) was found to be smaller than η/η0. Smaller ratios of the microscopic to macroscopic viscosity (ηeff/η) are attributed to a combination of weaker PPI and less self-association. The interaction parameters extracted from fits of D0/Ds with a length scale dependent viscosity model agree with previous measurements of PPI by SLS and SAXS. Trends in the degree of self-association, estimated from ηeff/η with a microviscosity model, are consistent with oligomer sizes measured by SLS. Finally, measurements of collective diffusion and osmotic compressibility were combined with FCS data to demonstrate that the changes in self-diffusion between formulations are due primarily to changes in the protein-protein friction in these systems, and not to protein-solvent friction. Thus, FCS is a robust and accessible technique for measuring mAb self-diffusion, and, by extension, microviscosity, PPI and self-association that govern mAb solution dynamics.
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Affiliation(s)
- Jessica J Hung
- McKetta Department of Chemical Engineering, The University of Texas at Austin, 200 E Dean Keeton St Stop C0400, Austin, TX 78712, USA.
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7
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Rheological properties of concentrated slurries of harvested, incubated and ruptured Nannochloropsis sp. cells. ACTA ACUST UNITED AC 2019. [DOI: 10.1186/s42480-019-0011-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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8
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Bergman MJ, Garting T, Schurtenberger P, Stradner A. Experimental Evidence for a Cluster Glass Transition in Concentrated Lysozyme Solutions. J Phys Chem B 2019; 123:2432-2438. [PMID: 30785749 PMCID: PMC6550439 DOI: 10.1021/acs.jpcb.8b11781] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Lysozyme
is known to form equilibrium clusters at pH ≈ 7.8
and at low ionic strength as a result of a mixed potential. While
this cluster formation and the related dynamic and static structure
factors have been extensively investigated, its consequences on the
macroscopic dynamic behavior expressed by the zero shear viscosity
η0 remain controversial. Here we present results
from a systematic investigation of η0 using two complementary
passive microrheology techniques, dynamic light scattering based tracer
microrheology, and multiple particle tracking using confocal microscopy.
The combination of these techniques with a simple but effective evaporation
approach allows for reaching concentrations close to and above the
arrest transition in a controlled and gentle way. We find a strong
increase of η0 with increasing volume fraction ϕ
with an apparent divergence at ϕ ≈ 0.35, and unambiguously
demonstrate that this is due to the existence of an arrest transition
where a cluster glass forms. These findings demonstrate the power
of tracer microrheology to investigate complex fluids, where weak
temporary bonds and limited sample volumes make measurements with
classical rheology challenging.
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Affiliation(s)
- Maxime J Bergman
- Division of Physical Chemistry, Department of Chemistry , Lund University , PO Box 124, SE-22100 Lund , Sweden
| | - Tommy Garting
- Division of Physical Chemistry, Department of Chemistry , Lund University , PO Box 124, SE-22100 Lund , Sweden
| | - Peter Schurtenberger
- Division of Physical Chemistry, Department of Chemistry , Lund University , PO Box 124, SE-22100 Lund , Sweden.,LINXS - Lund Institute of advanced Neutron and X-ray Science , SE-22100 Lund , Sweden
| | - Anna Stradner
- Division of Physical Chemistry, Department of Chemistry , Lund University , PO Box 124, SE-22100 Lund , Sweden.,LINXS - Lund Institute of advanced Neutron and X-ray Science , SE-22100 Lund , Sweden
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9
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Ferreira GM, Calero-Rubio C, Sathish HA, Remmele RL, Roberts CJ. Electrostatically Mediated Protein-Protein Interactions for Monoclonal Antibodies: A Combined Experimental and Coarse-Grained Molecular Modeling Approach. J Pharm Sci 2019; 108:120-132. [DOI: 10.1016/j.xphs.2018.11.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 10/27/2018] [Accepted: 11/01/2018] [Indexed: 01/05/2023]
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10
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Beuguel Q, Tavares JR, Carreau PJ, Heuzey MC. Ultrasonication of spray- and freeze-dried cellulose nanocrystals in water. J Colloid Interface Sci 2018; 516:23-33. [DOI: 10.1016/j.jcis.2018.01.035] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 01/08/2018] [Accepted: 01/09/2018] [Indexed: 12/24/2022]
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11
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Ziegert F, Koof M, Wagner J. A new class of copolymer colloids with tunable, low refractive index for investigations of structure and dynamics in concentrated suspensions. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4137-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Zhu W, Lou Y, Liu Q, Song H, Wang J, Yue M. Rheological Modeling of Dispersion System of Nano/Microsized Polymer Particles Considering Swelling Behavior. J DISPER SCI TECHNOL 2015. [DOI: 10.1080/01932691.2015.1038348] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Hudson SD, Sarangapani P, Pathak JA, Migler KB. A Microliter Capillary Rheometer for Characterization of Protein Solutions. J Pharm Sci 2015; 104:678-85. [DOI: 10.1002/jps.24201] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 09/15/2014] [Accepted: 09/17/2014] [Indexed: 12/17/2022]
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14
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15
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Self-assembly of water insoluble polymers into Colloidal Unimolecular Polymer (CUP) particles of 3–9 nm. POLYMER 2014. [DOI: 10.1016/j.polymer.2013.11.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Chen M, Riddles CJ, Van De Mark MR. Electroviscous contribution to the rheology of colloidal unimolecular polymer (CUP) particles in water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:14034-14043. [PMID: 24200369 DOI: 10.1021/la4026552] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The rheological characteristics of anionic colloidal unimolecular polymer (CUP) particles in water were investigated. The intrinsic viscosities were determined for CUPs with different molecular weights as a function of volume fraction. The specific viscosities were measured and fit with models considering hydrodynamic interaction and electroviscous effects. The rheological characteristics were consistent with a surface layer of water which increases with the particle size or molecular weight of CUPs. The effective charges on the surface of particle were calculated and correlated with the rheological behavior of the CUP particles from the dilute to semidilute range, a volume fraction of 0.0001-0.08.
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Affiliation(s)
- Minghang Chen
- Coatings Institute of Missouri University of Science and Technology, 651 West 13th Street, Rolla, Missouri 65409, United States
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17
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Wan J, Shi L, Benson B, Bruzek MJ, Anthony JE, Sinko PJ, Prudhomme RK, Stone HA. Microfluidic generation of droplets with a high loading of nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:13143-8. [PMID: 22934976 PMCID: PMC3856230 DOI: 10.1021/la3025952] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Microfluidic approaches for controlled generation of colloidal clusters, for example, via encapsulation of colloidal particles in droplets, have been used for the synthesis of functional materials including drug delivery carriers. Most of the studies, however, use a low concentration of an original colloidal suspension (<10 wt %). Here we demonstrate microfluidic approaches for directly making droplets with moderate (10-25 wt %) and high (>60 wt %) particle concentrations. Three types of microfluidic devices, PDMS flow-focusing, PDMS T-junction, and microcapillary devices, are investigated for direct encapsulation of a high concentration of polystyrene (PS) nanoparticles in droplets. In particular, it is shown that PDMS devices fabricated by soft lithography can generate droplets from a 25 wt % PS suspension, whereas microcapillary devices made from glass capillary tubes are able to produce droplets from a 67 wt % PS nanoparticle suspension. When the PS concentration is between 0.6 and 25 wt %, the size of the droplets is found to change with the oil-to-water flow rate ratio and is independent of the concentration of particles in the initial suspensions. Drop sizes from ~12 to 40 μm are made using flow rate ratios Q(oil)/Q(water) from 20 to 1, respectively, with either of the PDMS devices. However, clogging occurs in PDMS devices at high PS concentrations (>25 wt %) arising from interactions between the PS colloids and the surface of PDMS devices. Glass microcapillary devices, on the other hand, are resistant to clogging and can produce droplets continuously even when the concentration of PS nanoparticles reaches 67 wt %. We believe that our findings indicate useful approaches and guidelines for the controlled generation of emulsions filled with a high loading of nanoparticles, which are useful for drug delivery applications.
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Affiliation(s)
- Jiandi Wan
- Microsystems Engineering, Rochester Institute of Technology, Rochester, NY 14623
| | - Lei Shi
- Firmenich, Corporate R&D Division, 1217 Meyrin 2 Geneva, Switzerland
| | - Bryan Benson
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544
| | - Matthew J. Bruzek
- Department of Chemistry, University of Kentucky, Lexington, KY 40506-0055
| | - John E. Anthony
- Department of Chemistry, University of Kentucky, Lexington, KY 40506-0055
| | - Patrick J. Sinko
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers University, NJ 08854
| | - Robert K. Prudhomme
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544
| | - Howard A. Stone
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544
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18
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Johnston KP, Maynard JA, Truskett TM, Borwankar AU, Miller MA, Wilson BK, Dinin AK, Khan TA, Kaczorowski KJ. Concentrated dispersions of equilibrium protein nanoclusters that reversibly dissociate into active monomers. ACS NANO 2012; 6:1357-1369. [PMID: 22260218 DOI: 10.1021/nn204166z] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Stabilizing proteins at high concentration is of broad interest in drug delivery, for treatment of cancer and many other diseases. Herein, we create highly concentrated antibody dispersions (up to 260 mg/mL) comprising dense equilibrium nanoclusters of protein (monoclonal antibody 1B7, polyclonal sheep immunoglobulin G, and bovine serum albumin) molecules which, upon dilution in vitro or administration in vivo, remain conformationally stable and biologically active. The extremely concentrated environment within the nanoclusters (∼700 mg/mL) provides conformational stability to the protein through a novel self-crowding mechanism, as shown by computer simulation, while the primarily repulsive nanocluster interactions result in colloidally stable, transparent dispersions. The nanoclusters are formed by adding trehalose as a cosolute which strengthens the short-ranged attraction between protein molecules. The protein cluster diameter was reversibly tuned from 50 to 300 nm by balancing short-ranged attraction against long-ranged electrostatic repulsion of weakly charged protein at a pH near the isoelectric point. This behavior is described semiquantitatively with a free energy model which includes the fractal dimension of the clusters. Upon dilution of the dispersion in vitro, the clusters rapidly dissociated into fully active protein monomers as shown with biophysical analysis (SEC, DLS, CD, and SDS-PAGE) and sensitive biological assays. Since the concept of forming nanoclusters by tuning colloid interactions is shown to be general, it is likely applicable to a variety of biological therapeutics, mitigating the need to engineer protein stability through amino acid modification. In vivo subcutaneous injection into mice results in indistinguishable pharmacokinetics versus a standard antibody solution. Stable protein dispersions with low viscosities may potentially enable patient self-administration by subcutaneous injection of antibody therapeutics being discovered and developed.
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Affiliation(s)
- Keith P Johnston
- Department of Chemical Engineering, The University of Texas at Austin, 1 University Station C0400, Austin, Texas 78712-0231, United States.
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19
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Heinen M, Banchio AJ, Nägele G. Short-time rheology and diffusion in suspensions of Yukawa-type colloidal particles. J Chem Phys 2012; 135:154504. [PMID: 22029321 DOI: 10.1063/1.3646962] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A comprehensive study is presented on the short-time dynamics in suspensions of charged colloidal spheres. The explored parameter space covers the major part of the fluid-state regime, with colloid concentrations extending up to the freezing transition. The particles are assumed to interact directly by a hard-core plus screened Coulomb potential, and indirectly by solvent-mediated hydrodynamic interactions. By comparison with accurate accelerated Stokesian Dynamics (ASD) simulations of the hydrodynamic function H(q), and the high-frequency viscosity η(∞), we investigate the accuracy of two fast and easy-to-implement analytical schemes. The first scheme, referred to as the pairwise additive (PA) scheme, uses exact two-body hydrodynamic mobility tensors. It is in good agreement with the ASD simulations of H(q) and η(∞), for smaller volume fractions up to about 10% and 20%, respectively. The second scheme is a hybrid method combining the virtues of the δγ scheme by Beenakker and Mazur with those of the PA scheme. It leads to predictions in good agreement with the simulation data, for all considered concentrations, combining thus precision with computational efficiency. The hybrid method is used to test the accuracy of a generalized Stokes-Einstein (GSE) relation proposed by Kholodenko and Douglas, showing its severe violation in low salinity systems. For hard spheres, however, this GSE relation applies decently well.
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Affiliation(s)
- Marco Heinen
- Institute of Complex Systems (ICS-3), Forschungszentrum Jülich, D-52425 Jülich, Germany.
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20
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Zhang Q, Wang WJ, Lu Y, Li BG, Zhu S. Reversibly Coagulatable and Redispersible Polystyrene Latex Prepared by Emulsion Polymerization of Styrene Containing Switchable Amidine. Macromolecules 2011. [DOI: 10.1021/ma201056g] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qi Zhang
- State Key Lab of Chemical Engineering, Institute of Polymerization and Polymer Engineering Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027 P R China
| | - Wen-Jun Wang
- State Key Lab of Chemical Engineering, Institute of Polymerization and Polymer Engineering Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027 P R China
| | - Yangyang Lu
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027 P R China
| | - Bo-Geng Li
- State Key Lab of Chemical Engineering, Institute of Polymerization and Polymer Engineering Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027 P R China
| | - Shiping Zhu
- Department of Chemical Engineering, McMaster University, Hamilton, Ontario, Canada L8S 4L7
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21
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Barroso RP, Riske KA, Henriques VB, Lamy MT. Ionization and structural changes of the DMPG vesicle along its anomalous gel-fluid phase transition: a study with different lipid concentrations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:13805-13814. [PMID: 20669914 DOI: 10.1021/la101784w] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Dispersions of saturated anionic phospholipid dimyristoyl phosphatidylglycerol (DMPG) have been extensively studied regarding their peculiar thermostructural behavior. At low ionic strength, the gel-fluid transition is spread along nearly 17 degrees C, displaying several thermal events in the calorimetric profile that is quite different from the single sharp peak around 23 degrees C found for higher ionic strength DMPG dispersions. To investigate the role of charge in the bilayer transition, we carefully examine the temperature dependence of the electrical conductivity of DMPG dispersions at different concentrations, correlating the data with the corresponding differential scanning calorimetry (DSC) traces. Electrical conductivity together with electrophoretic mobility measurements allowed the calculation of the dependence of the degree of ionization of DMPG vesicles on lipid concentration and temperature. It was shown that there is a decrease in vesicle charge as the lipid concentration increases, which is probably correlated with the increase in the concentration of bulk Na(+). Apart from the known increase in the electrical conductivity along the DMPG temperature transition region, a sharp rise was observed at the bilayer pretransition for all lipid concentrations studied, possibly indicating that the beginning of the chain melting process is associated with an increase in bilayer ionization. It is confirmed here that the gel-fluid transition of DMPG at low ionic strength is accompanied by a huge increase in the dispersion viscosity. However, it is shown that this measured macroviscosity is distinct from the local viscosity felt by either charged ions or DMPG charged aggregates in measurements of electrical conductivity or electrophoretic mobility. Data presented here give support to the idea that DMPG vesicles, at low ionic strength, get more ionized along the temperature transition region and could be perforated and/or deformed vesicle structures.
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Affiliation(s)
- Rafael P Barroso
- Instituto de Física, Universidade de São Paulo, São Paulo, Brazil
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22
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Abade GC, Cichocki B, Ekiel-Jeżewska ML, Nägele G, Wajnryb E. High-frequency viscosity of concentrated porous particles suspensions. J Chem Phys 2010; 133:084906. [DOI: 10.1063/1.3474804] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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23
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Microstructure and rheological properties of thermo-responsive poly(N-isopropylacrylamide) microgels. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.04.059] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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24
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Bouchoux A, Debbou B, Gésan-Guiziou G, Famelart MH, Doublier JL, Cabane B. Rheology and phase behavior of dense casein micelle dispersions. J Chem Phys 2009; 131:165106. [DOI: 10.1063/1.3245956] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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25
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Johannsmann D, Reviakine I, Richter RP. Dissipation in Films of Adsorbed Nanospheres Studied by Quartz Crystal Microbalance (QCM). Anal Chem 2009; 81:8167-76. [DOI: 10.1021/ac901381z] [Citation(s) in RCA: 134] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Diethelm Johannsmann
- Institute of Physical Chemistry, Clausthal University of Technology, D-38678 Clausthal−Zellerfeld, Germany, Biosurfaces Unit, CIC biomaGUNE, 20009 Donostia, San Sebastian, Spain, Department of Biochemistry and Molecular Biology, University of the Basque Country, 48940 Leioa, Spain, and Department of New Materials and Biosystems, Max Planck Institute for Metals Research, D-70569 Stuttgart, Germany
| | - Ilya Reviakine
- Institute of Physical Chemistry, Clausthal University of Technology, D-38678 Clausthal−Zellerfeld, Germany, Biosurfaces Unit, CIC biomaGUNE, 20009 Donostia, San Sebastian, Spain, Department of Biochemistry and Molecular Biology, University of the Basque Country, 48940 Leioa, Spain, and Department of New Materials and Biosystems, Max Planck Institute for Metals Research, D-70569 Stuttgart, Germany
| | - Ralf P. Richter
- Institute of Physical Chemistry, Clausthal University of Technology, D-38678 Clausthal−Zellerfeld, Germany, Biosurfaces Unit, CIC biomaGUNE, 20009 Donostia, San Sebastian, Spain, Department of Biochemistry and Molecular Biology, University of the Basque Country, 48940 Leioa, Spain, and Department of New Materials and Biosystems, Max Planck Institute for Metals Research, D-70569 Stuttgart, Germany
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Miao F, Velayudhan A, DiBella E, Shervin J, Felo M, Teeters M, Alred P. Theoretical analysis of excipient concentrations during the final ultrafiltration/diafiltration step of therapeutic antibody. Biotechnol Prog 2009; 25:964-72. [DOI: 10.1002/btpr.168] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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27
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Eriksson R, Pajari H, Rosenholm JB. Shear modulus of colloidal suspensions: Comparing experiments with theory. J Colloid Interface Sci 2009; 332:104-12. [DOI: 10.1016/j.jcis.2008.12.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2008] [Revised: 11/13/2008] [Accepted: 12/11/2008] [Indexed: 11/26/2022]
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28
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Russel WB. Structure−Property Relations for the Rheology of Dispersions of Charged Colloids. Ind Eng Chem Res 2008. [DOI: 10.1021/ie800385m] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- William B. Russel
- Department of Chemical Engineering and the Graduate School, Princeton University, Princeton, New Jersey 08544
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29
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Wutzel H, Samhaber W. Synthesis and characterization of sulphonated core-shell latices in the size range between 30 and 80nm. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2007.07.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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30
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Banchio AJ, Nägele G. Short-time transport properties in dense suspensions: From neutral to charge-stabilized colloidal spheres. J Chem Phys 2008; 128:104903. [DOI: 10.1063/1.2868773] [Citation(s) in RCA: 143] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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31
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Tan BH, Tam KC. Review on the dynamics and micro-structure of pH-responsive nano-colloidal systems. Adv Colloid Interface Sci 2008; 136:25-44. [PMID: 17707760 DOI: 10.1016/j.cis.2007.07.002] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2007] [Revised: 07/05/2007] [Accepted: 07/05/2007] [Indexed: 11/30/2022]
Abstract
This review presents an overview on the research on pH-responsive microgel particles in the last 10 years. Microgels are cross-linked latex particles that are swollen in a good solvent. Significant quantitative studies have been conducted to investigate the swelling behavior (microscopic) and rheological (macroscopic) properties of the pH-responsive microgel particles as a function of neutralization degree, ionic strength, and cross-linked density. Mono-dispersed, alkali-swellable microgels containing carboxylic acid lattices, whose properties display extreme pH sensitivity in water is considered in detail in terms of swelling behavior and rheological properties. Their stability in solution and ability to undergo reversible volume phase transitions in response to pH makes them ideal model systems for the development of a semi-empirical as well as theoretical approach for predicting the viscosity of dilute and concentrated hard and soft sphere systems. The review concludes with a discussion of some recent applications of pH-responsive microgel particles.
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Affiliation(s)
- Beng H Tan
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
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32
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Modelling the zero shear viscosity of bimodal high solid content latex: Calculation of the maximum packing fraction. Chem Eng Sci 2006. [DOI: 10.1016/j.ces.2006.04.024] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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33
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Kelarakis A, Crassous JJ, Ballauff M, Yang Z, Booth C. Micellar spheres in a high frequency oscillatory field. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:6814-7. [PMID: 16863225 DOI: 10.1021/la0607860] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The viscoelasticity of aqueous micellar solutions of two oxyethylene/oxybutylene block copolymers (E(92)B(18) and B(20)E(510)) has been investigated using a torsional resonator operated at 26 kHz. For both systems considered, values of the dynamic viscosity (eta'(infinity)) point to partial draining of the micellar corona induced by the high-frequency oscillatory field. At low effective volume fractions, values of the elastic modulus (G'(infinity)) indicate that the repulsive interactions between micelles can be modeled by a power law function u(r) proportional to 1/r(nu) with exponents close to 13 and 6 for copolymers E(92)B(18) and B(20)E(510) respectively. At a critical copolymer concentration (c*) plots of log(G'(infinity)) against log(c) deviate from the straight lines established at low concentrations, implying that the systems undergo ergodic/nonergodic transitions.
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Affiliation(s)
- Antonis Kelarakis
- Physikalishe Chemie I, Universität Bayreuth, Universitätsstrasse 30, 95440 Bayreuth, Germany.
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Zakharov P, Bhat S, Schurtenberger P, Scheffold F. Multiple-scattering suppression in dynamic light scattering based on a digital camera detection scheme. APPLIED OPTICS 2006; 45:1756-64. [PMID: 16572691 DOI: 10.1364/ao.45.001756] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
We introduce a charge-coupled device (CCD) camera-based detection scheme in dynamic light scattering that provides information on the single-scattered autocorrelation function even for fairly turbid samples. It is based on the single focused laser beam geometry combined with the selective cross-correlation analysis of the scattered light intensity. Using a CCD camera as a multispeckle detector, we show how spatial correlations in the intensity pattern can be linked to single- and multiple-scattering processes. Multiple-scattering suppression is then achieved by an efficient cross-correlation algorithm working in real time with a temporal resolution down to 0.02 s. Our approach allows access to the extensive range of systems that show low-order scattering by selective detection of the singly scattered light. Model experiments on slowly relaxing suspensions of titanium dioxide in glycerol were carried out to establish the validity range of our approach. Successful application of the method is demonstrated up to a scattering coefficient of more than micro(S) = 5 cm(-1) for the sample size of L = 1 cm.
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Affiliation(s)
- Pavel Zakharov
- Department of Physics, University of Fribourg, CH-1700 Fribourg, Switzerland.
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Nunes J, de Vasconcelos C, Dantas T, Pereira M, Fonseca J. Electrokinetic behavior of a poly(butyl acrylate-co-methacrylic acid) latex. Colloids Surf A Physicochem Eng Asp 2006. [DOI: 10.1016/j.colsurfa.2005.09.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ahn JS, Hammond PT, Rubner MF, Lee I. Self-assembled particle monolayers on polyelectrolyte multilayers: particle size effects on formation, structure, and optical properties. Colloids Surf A Physicochem Eng Asp 2005. [DOI: 10.1016/j.colsurfa.2005.02.008] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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39
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Pishvaei M, Graillat C, McKenna T, Cassagnau P. Rheological behaviour of polystyrene latex near the maximum packing fraction of particles. POLYMER 2005. [DOI: 10.1016/j.polymer.2004.11.047] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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40
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Tan BH, Tam KC, Lam YC, Tan CB. Dynamics and microstructure of charged soft nano-colloidal particles. POLYMER 2004. [DOI: 10.1016/j.polymer.2004.05.055] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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41
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Seefeldt KF, Solomon MJ. Self-diffusion in dilute colloidal suspensions with attractive potential interactions. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2003; 67:050402. [PMID: 12786122 DOI: 10.1103/physreve.67.050402] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2003] [Indexed: 05/24/2023]
Abstract
The colloidal short-time self-diffusivity D(s)(s)(phi) is significantly retarded relative to hard sphere suspensions for the case of interparticle potential interactions induced by a nonadsorbing polymer. A comparison of diffusing wave spectroscopy measurements with direct calculations of D(s)(s)(phi) demonstrates that depletion effects on structure explain the observed retardation. We show that coexistence boundaries place unexpectedly severe constraints on the amount of D(s)(s)(phi) retardation possible for stable suspensions. The measured retardation is demonstrated to be an indicator of suspension metastability.
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Affiliation(s)
- Kurt F Seefeldt
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136, USA
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43
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Koenderink GH, Lettinga MP, Philipse AP. Rotational dynamics of charged colloidal spheres: Role of particle interactions. J Chem Phys 2002. [DOI: 10.1063/1.1509054] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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44
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Quemada D, Berli C. Energy of interaction in colloids and its implications in rheological modeling. Adv Colloid Interface Sci 2002; 98:51-85. [PMID: 12061712 DOI: 10.1016/s0001-8686(01)00093-8] [Citation(s) in RCA: 148] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
This work deals with the problem of deriving theoretical connections between rheology and interparticle forces in colloidal suspensions. The nature of interparticle forces determines the colloidal structure (crystalline order due to long range repulsive forces, flocculation due to attractive forces, etc.) and hence, the flow behavior of suspensions. The aim of this article is to discuss how these interactions enter the modeling of rheometric functions, in particular, the shear viscosity. In this sense, the main interactions commonly appearing in colloids are reviewed, as well as the role they play in phase transition behavior. Then, a series of approaches relating the interaction potential to viscosity is examined. The results of applying these models to experimental data are also discussed. Finally, examples of viscosity modeling for different interaction potentials are given, by using the structural model proposed previously by the authors. The possibility of relating the flow behavior of colloidal suspensions to the interaction between particles offers new perspectives for the study and technical applications of these systems.
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46
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Maranzano BJ, Wagner NJ. The effects of particle size on reversible shear thickening of concentrated colloidal dispersions. J Chem Phys 2001. [DOI: 10.1063/1.1373687] [Citation(s) in RCA: 277] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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